package com.dc.chat.filter;
 
import com.dc.chat.entity.to.ResponseBean;
import org.springframework.stereotype.Component;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
@Component
@WebFilter
public class CORSFilter implements Filter {
 
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
    }
 
    @Override
    public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {
        HttpServletRequest httpServletRequest=(HttpServletRequest)req;
        String servletPath = httpServletRequest.getServletPath();
        if(!servletPath.startsWith("/ws")){
            //设置跨域请求
            HttpServletResponse response = (HttpServletResponse) res;
            response.setHeader("Access-Control-Allow-Origin", "*");
            response.setHeader("Access-Control-Allow-Methods", "*");
//            response.setHeader("Access-Control-Max-Age", "36000");
            response.setHeader("Access-Control-Allow-Headers", "*");
//            response.setHeader("Access-Control-Allow-Credentials", "true");
        }
        chain.doFilter(req, res);

    }
 
    @Override
    public void destroy() {
    }
}